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Markal® #500 Black Lumber Crayon

Airgas Part #:MKL80323

Manufacturer Part #:080323

$1.40 /Each
Package Size Options
$1.40 Each
$16.80 Dozen 12 Each / Dozen
$201.60 Case 144 Each / Case

Item Details

  • Markal® #500 Black Lumber Crayon with a point size of 1/2" is ideal for marking in hot climates and the clay based formula renders long lasting marking mileage, Crayon of length 4 5/8" provides bold marks and features a special harder formula. It has a marking range of -20 to 150 deg F and it is weather and UV-resistant. It is ideal for surfaces like wood, concrete and stone, metal, plastic and rubber. It is used for construction, stone, masonry, lumber and timber industry.


  • Known in construction trades as "keel" or layout chalk
  • Clay-based formula provides longer marking mileage
  • Special harder formula allows for superior marking in hot climates
  • Available in fluorescent colors for high visibility marks
  • Marking range: -20° F to 150° F (-29° C to 66° C)


  • Construction
  • Stone and masonry
  • Lumber and timber industry
  • Wood
  • Concrete and stone
  • Metal
  • Plastic
  • Rubber

Product Attributes

Product Type

» Lumber Crayon


» Black

Size Description

» 1/2" X 4 5/8"

Trade Name

» #500